期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1217, 期 40, 页码 6153-6158出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2010.08.005
关键词
Hollow fiber supported liquid membrane; HF-LPME; NSAIDs; Sewage sludge
资金
- Spanish National Research Programme [2008-06847-C02-02]
- Spanish Ministry of Science and Technology [AP2007-01946]
In this study, a three-phase hollow fiber liquid-phase microextraction (HF-LPME) method combined with liquid chromatography-mass spectrometry was developed for direct determination of four non-steroidal anti-inflammatory drugs (ketoprofen, naproxen, diclofenac and ibuprofen) in sewage sludge. The drugs were extracted from non-spiked and spiked slurry samples with different amounts of sludge into an organic phase and then back-extracted into an aqueous phase held in the lumen of the hollow fiber. High enrichment factors ranging from 2761 to 3254 in pure water were achieved. In sludge samples, repeatability and inter-clay precision were tested with relative standard deviation values between 10-18% and 7-15%, respectively. Average concentrations of 29 +/- 9, 138 +/- 2, 39 +/- 5 and 122 +/- 7 ng/g were determined in dried sludge from Kallby sewage treatment plant (Sweden) for ketoprofen, naproxen, diclofenac and ibuprofen, respectively. (C) 2010 Elsevier B.V. All rights reserved.
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